| 摘要 |
A torsion adjusting module is described. The module includes a shaft, a main body, an elastic member, and an adjusting device. The main body is made of an elastic material with an unclosed circular structure to couple to the shaft. A distance is formed at ends of the unclosed circular structure to keep a gap between the main body and the shaft. The elastic member is disposed in the gap between the shaft and the main body. The adjusting device is disposed at the ends of the unclosed circular structure to adjust the distance between the ends to adjust a torsion between the shaft and the main body. A predetermined torsion is set between the shaft and the main body before the adjusting device adjusts the adjusting device. The torsion is increased when the adjusting device is pressed to shrink the distance of the ends.
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